Incorporate a secret rev reverse logo in the left hand side of the header.
(cherry picked from commit 46e57fd)
Add media query for the secret rev reverse logo, the middle image and the header title.
Merge branch 'master' of github.com:LiminalSoftware/Categorize

# By Bryan White
# Via Bryan White
* 'master' of github.com:LiminalSoftware/Categorize:
  update digest_service login method to set 'authorized' cookie that expires after 300s, and isAuthorized method to return true if 'authorized' cookie's value is true, false otherwise